nicolic tetrad

The nicolic tetrad in close position is a 1-15/13-15/11-11/7 in a temperament where the nicola, 1575/1573, is tempered out. It therefore has steps of 15/13-13/11-15/13-14/11, and is a 15-limit chord. Equal divisions with nicolic tetrads include 58edo, 72edo, 87edo, 103edo, 121edo, 130edo, 190edo, 217edo, 224edo, 311edo, 414edo, 441edo, 665edo and 855edo.